Contrast-enhanced 3D MR Angiography with Simultaneous Acquisition of Spatial Harmonics: A Pilot Study

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Abstract
A partially parallel image acquisition technique, simultaneous acquisition of spatial harmonics, or SMASH, was used to increase the spatial and/or temporal resolution in contrast material–enhanced three-dimensional magnetic resonance angiography of the abdominal aorta and renal arteries. In eight healthy subjects, the breath-hold duration was halved at constant spatial resolution, or the spatial resolution was doubled at fixed breath-hold duration, with a 30%–55% reduction in the signal-to-noise ratio but otherwise preserved or improved image quality.